Cleaning device



June 18, 1929. QLSQN 1,718,179

CLEANING DEVICE File F b 1928 2 Sheets-Sheet 1 June 18, 1929. 'r. A. OLSON 1.718.17

CLEANING DEVI C E Fiied Fe 5, 1928 2 Sheets-Sheet 2 L9 [9 7 1% w I K Ill :LTQI INVENTOR.

Patented June l 1929.

UNITED STATES TfiOMAS A. OLSON, 0F HOUSTON, TEXA$.

CLEAN ING DEVICE.

Application filed February 3, 1928. Serial No. 251,559.

My invention relates to devices for removing and cleaning rust, scale, paint, etc., from metallic-surfaces and has for anobject to provide an extremely simple and compact structure which may be easily handled-and is highly effectual and economical in operation. The scope of my invention is not to be limited to the details as shown but extends to whatever construction may be included within the terms or language of the appended claims.

1n the drawings: v

Figure 1 is a top plan view partially broken away, of my improved surface cleaning device Figures 2 and 2 illustrate a somewhat diagrammatic showing of the path the cutters assume in cleaning straight and curved surfaces Fig ure 3 is a transverse sectional view taken on the line 3-3 of Figure 1, looking in the. direction of the arrows, and

Figure t is a similar view illustrating my invention as applied to the outlet end of conventional sheet straightening rollers.

My invention, in the form or embodiment shown in the drawings and briefly described, comprises a hood or casing, indicated gen erally as at 10, having downwardly curved side portions, 11, and substantially'straight end walls 12. Each of the end walls, 12, are provided with a pair of spaced journal bearings, 13, for the purpose of mounting the rotatable shafts, 14:.

Members, 15, each preferably having three radially extending arms, are keyed or otherwise secured upon the rotatably mounted shafts, 14, and are so arranged upon their respective shafts that-they will not interfere during their rotative movement and at the same time constantly maintain their respective interdental arrangement, which, it willbe noted, with reference to Figure 3, is preferably in reverse directions.

Openings, 16, are provided near the outer ends of each of the arms constituting the member, 15, for the purpose of receiving and supporting the rods, 17. These rods, 17, may beheld in their proper position Within the members, 15, by means of cotter pins, 18, or the like.

A plurality of toothed rollers or'cutters, 19, are mounted upon each of the rods, 17, and between each of the oppositely disposed or mating pairs of arms of the member, 15.

ilhere is a relatively wide space between each of the rollers, 19, which will permit them rotate freely without binding and with the minimum amount of side scraping while in operatlon.

The rollers, 19, are provided withcircular bores, 20, concentric to the periphery thereof and of a diameter substantially twice that of the rods, 17, upon which they are mounted. By reason of the fact that the surface of the bore, 20, of each of the discs or cut- I ters, 19, are relatively smooth, a rolling aetion between the cutters and their respective rods are obtained with the minimum amount of friction. Although I have disclosed diagonally cut teeth upon the periphery of the cutters or discs, 19, it is to be understood that teeth or projections of varying forms may be provided, depending upon the nature of the surface of the metal to be cleaned or treated.

In Figures 2 and 2 are illustrated the substantial contour the cutters, 19, would assume in operating against at and curved surfaces. The dot and'dash lines, 21, indicate the path of movement of the rods, 17,

whereas the path of movement of the discs or cutters, 19. are represented by the dotted lines, 22. It is, of course,-obvious that when. the cutter, 19, strikes the surface of the work represented by the line, 23, the cutter will be deflected from its rotary course at the point, a, to a course parallel with the surface to be cleaned, continuing in line therewith up to the substantial point indicated at Z). From the point, 6, the cutters gradually roll outwardly upon their respective rods, 17', until they are in a substantially horizontai position when they again assume their fur thest outward position, as shown by the dotted line, 22. In this manner, it will be readily understood, the surface of the work: to be cleaned. receives a sharp blow by the entire series or gang of cutters, from which point the gang of cutters roll along the S111-\ face for a distance depending upon. th

when cleaning the outer surface of tanks or I- other curved surfaces.

For the purpose of predetermmedly I justing the length of the contacting or cuttin action between the discs or cutters, 19, an the respective surface tov be cleaned, I provide a vertically mounted adjusting "screw, 24, in each corner, of the hood or casing, 10, which is preferably threaded through respective lugs, 25. Handles, 26, are preferably formed upon the upper surface of the casing, 10, for the purpose-of readily moving my improved cleaning device wlth respect to the work to be cleaned. By placing the motor,.M, upon the upper side of the casing, 10, and arranging the driving gears, 27, relatively close to one end thereof, a very compact and self contained ,cleanihg device is obtained.

Referring now to Figure 4, wherein I employ a pair of oppositely disposed cleaning elements, one on either side of the sheet, 28, driving means other than electric motors, may be employed, as, for example, they may be driven from the same power employed in driving the rollers or from any other suitable source. In this instance, each of the hoods or casings, 10, may be moved to and from the sheet, 28, by means of the bolts, 29, which are carried by the horizontal beams, 30, and the slots, 31, which are formed through the casing, 10. It will be readily seen that in this application of my invention, the scale or paint from both sides of the sheet, 28, would be simultaneously I cleaned in one operation;

Although I am aware of the act that numerous attempts have been ma eto accom plish this result in various ways, yet I know of no device which issoconstructed as'to so efl'ectuallycle'an metallic'surfaces of rust, paint, or scale, by exerting a rolling action with considerable pressure against the surface, and. uniformly parallel with respect thereto.

lit will also be obvious from the disclosures that the paths of movement of both sets of disks cross one another during their rotative movement. This is due to the timing of one of the sets of arms with respect to the opposite set of disk-carrying arms By this arrangement the oppositely rotating arms'may be disposed relatively close to one another to attain the compactness essential to a device of this nature.

I claim:

1- Acleaning device for metallic surfaces comprising a casing, a plurality of pairs of rotatabl mounted members, each havin a series 0 rods carried thereby and extendlng in parallel, a plurality of discs having roughened outer surfaces mounted upon said rods and loosely spaced with respect thereto, each of said discs having a relatively large circular opening concentricwith respect thereto, a plurality of members arranged to bear against the metalto be cleaned for maintalning a substantially uniform distance between the case and said metal and driving means for rotating said members in opposite directions,

2. A cleaning device for metallic surfaces, com rising a casing, a plurality of parallel sha ts rotatably mounted within the casing, a pair of oppositely disposed members keyed to each of said shafts and each of the members having outwardly extending arm portions, rods mounted near the'outer ends of each of said arms, a plurality of discs having roughened outer surfaces mounted upon the rods and loosely spaced with respect thereto, each of said discs having an opening substantially twice the diameter of the respective rods, for permitting the discs to roll with respect thereto, said rods being so arranged that the path described by the rotation of one of the sets of discs extends beyond that described by the other set of discs, a plurality of spacing members carried by the casing for varying the duration of contact of the cutters against said metal surface to be cleaned, and means for rotating said shafts in opposite directions.

. T. A. OLSON. I 

